Steam-pump



T! A. KILLMAN.

STEAM PUMP.

APPLICATION FILED 1UNE3: I919.

Patented Feb. 8,1921.

3 SHEETS-SHEET i- I l I/ I l I II I r /1- Kanzwo.

wylonaeys T. A. KILLMAN.

STEAM PUMP.

APPLICATION FILED JUNE 3. 1919.

Patented Feb. 8, 1921.

3 SHEETS-SHEET 2.

7.",4 jfL'llllmiz.

T. A. KILLMAN.

STEAM PUMP.

APPLICATION FILED JUNE 3,1919.

1,367,980, Patented Feb. 8, 1921.

3 SHEETS-SHEET 3.

rue/atol- UNITED; STATESPATENT OFFICE.

TI IQMAS A. KILLIsEAN, OE NASHVILLE, TENNESSEE.

STEAM-PUMP.

\ Application filed June 3,

1 1/7 :0, cm it may concern:

m Y T :nown that 1, incl inhuman,

a citizen or the Unitet Stat-cs. 'e .ng llashvil e in the county of Davie son and State of TEIRBBSSQG, have invented certain and useful Improvements in Steam- Pumps, of which the tollowin is a specification.

invention relates to pumping apparaore particularly to an unprovetvno in which "s or the present pumping apparatus d so constructed that loss through might place if a "hoe area. of cold water l ve st so that by 'inum e. iencv of the t with ion is to proicted that .veby will l .y raised the live which it is in other t in this ry of cold "tion of rot ah the .bly raised through ct of hc nventon is to pro- :trs which w ll be whollv a +1 '1 '11 s opeiation ant. in which tie for ctnti llino' supply of li to the cvlinders ot the apparatus will be actuated rouc h the m dium. of the exhausted from the salt cylinders.

latented Feb. 8.1921.

1919. Serial E0. 801,502.

A further object of the invention is to provide a novel arrangement of check valves for controlling the exhaust of steam from the cylinders of the apparatus and a novel float device for controlling the opening and the closing or thesevalves.

In the accompanying drawings:

Figure l is a view in elevation of the apparatus embodyingthe present invention;

2 is a vertical sectional view therethrough, parts being shown in elevation;

F 3 a horizontal sectional View taken substantially on the line 3-3 of Fig. 2;

rig. 4 is a vertical front to re. 1' sectional view taken substantially on the line L-l 01 Fig. 1;

Fig. 5 is a detail vertical sectional view through the three-way throttle valve of the pump; 1

The pumping apparatus embodying the present invention includes a boiler indicated in general by the numeral 1 and preferably of the upright lire tube type although any other type of boiler or steam generator might be employed if desired, in view of which fact more specific de cription of the boiler or generator is deemed unnecessary.

The pumping apparatus further includes two pumping cylinders one indicated ingeneral by the numeral 2 and the other in general by the numeral 3 the. e pumping cylinders being preferably arranged at diametrically opposite sides of the boiler or generator s-clearly shown in Figs. 1, 2 and 3 of the drawings. In a manner and by means which will presently be "fully described, water contained in either pumping cylinder is to be discharged therefrom through the admiss on of live steam from the generator 1 into the respe' tive cylinder, the steam being subsequently permitted to exhaust and being condensed whereby to create a partial vacuum within said pumpingcylinders for the purpose oi"- replenishing the cylinders with a further volume of water. The nu meral 4 indicates a valve casing which is arranged above the generator 1, and pipe 5 leads from the live steam space oi? the boiler or generator 1 to the said valve casino; 4 preterably through the lower side thereof as clearly shown in Figs. 4 and 5 of the drawings. eam condur ting pipes 6 and 7 lead from the .metrically opposite sides of the valve casing; t to the upper ends of the pumping cylinders 2 and 3 respectively, and rotatably ar-- ranged within the valve casing is a three-- way valve 8 having an inlet port 9 which is at all times in communication with the dis-1 be successively brought into communication with the steam conducting pipes 6 and 7 respectively. Thus when the outlet port 10 is in communication with the'pipe 6 as shown in Fig. 5, steam from the generator 1' will pass through the pipe 5 into the valve 6 through the port 9 and out through the port 10 and pipe 6' to the pumping cylinder 2, and when the valve is oscillated so as to bring the port 11. into communication with the pipe 7, the supply of steam tothe pipe 6 will be cut ft and the steam will pass through the said port 11 into the pipe 7 and to the pumping cylinder 3.

Steamv is permitted to exhaust from the pumping cylinders 2 and 3 through valve chambers 12 and 13 respectively within which are arranged che k valves is and 1 respectively, automatically moved with relation to their seats in a manner which will be presently explained. The exhaust steam passing through the valve casings 12 and 13 enters other valve casings indicated by the numerals 16 and 17 and in communication with the said valve casings 12 and 'l3 respectively. Each of the valve (asings' 16 17 has a downwardly extending inlet branch 18 and a substantially horizontally disposed branch 19, and working in the branches 19 of the casings 16 and 17 respectively are piston va ves 20 and 21. Each casing 16 and 17 has an outlet port 22 which in one position of the respective valve 20 or 21 as the case may be, is closed and in another position of the respetive valve is uncovered. As will be presently explained these outlet ports 22 are in communicationiwith respective'condensers for the steam. A rod 23 extends between and is rigidly connected with the pi: tons 20 and 21, the rod fitting in a fluid-tight manner through the adjacent ends of the branches 19 of the valve casings 16 and 17 and being yet capable of reciprocatory motion. In practice the piston valves 20 and 21 are so spaced by the rod 23 that when either valve is closed the other valve will be open.

valve 8 is provided with a stem 24; which extends exteriorly of its casing and has The rod 23 extends above and to one side of the valve casing 1, and the upon the respective rods 27 so that they may slidevertically thereon. For a purpose to be presently explained the external diameter oteach float is nearlyequal to the internal diameter of the respective pump cylinder so that there is only a relatively narrow space between the exterior surface of each float and the inner surface of the wall of the respective cylinder. Near its upper end each rod 27 is provided with an abutment 30 which may be permanently fixed in place or adjustably secured-upon the rod either as desired. Likewise each rod is provided near its lower end with an abutment 31, and below their abutments 31', the rods fit slidably through suitable guides 32 within the respective pumping cylinders'so as to be guided in the vertical movement which they are designed to have as the floats rise and fall and coact with the abutments 30 and 31-, as will be presently explained. The seats for the valves 1% and 15 are inclicated respectively by the numerals 33 and 34 and these valves are,vof course, designed. to engage their seats when they are moved in an upward direction through the lifting of the respective rods 27 by the rise or the respective floats 28 or 29 as the case may be The numeral 35 indicates a water supply pipe for the pumping apparatus and this pipe is provided with branches 36 and 37 in which are interposed che:k;valves 38 and '39 respectively. The branches 36 and 37 communicate respectively with the lower ends of the pumping cylinders 2 and 3, the the water delivered by the pipe 35 passing through the branches 36 and 3', and past the respective checlt valves into the said respective cylinders. Pipes 40. and 41 are con nected with the branches 36 and 37 respectively and communicate with a water conducting pipe Check valves Band 1a are interposed in the pipes 40 and 41 respe tively, and are designed to open in the direction of flow of water through the respective pipes 19 and ll 'to the pipe 42, the said pipes 40 and 41 being placed in communication with the pumping cylinders 2 and 3, respectively,through the branches 36 and 37 at points in these branches between the said' respective cylinders and the check valves 38 and 39. Leading from the pipe 42 are bran'h pipes 45 and l6 which 7 respectively lead to condensers indicated in general by the numerals and L8. The

said pipes 45 and 46 discharge into pipe coils 19 and 50 located within the casings 51 and 52 of the condensers 4-7 and 43 re-' spectively. The coils 49 and 50 discharge in turn into branch pipes 53 and 54 which connect with a main discharge pipe 55 through which water is delivered from the apparatus. As before stated, the outlets 22 from the valve casings 16 and 17 are in communication with the condensers and this communication is preferably established by pipes 56 and 57 leading respectively from the casings 16 and 17 to the lower ends of the casings 51 and 52. For a purpose to be presently explained, pipes 58 and 59 are arranged with their upper ends in communi:

cation with the pumping cylinders 2 and 3, respectively,near the upper ends of the latter, and at their lower ends these pipes communicate with the water sp of the boiler or generator 1 near the lower end thereof, check valves 60 and 61 being interposed in the pipes 58 and 59 respectively, and opening in the direction of flow of water through the pipes to the said boiler or generator.

Assuming that the pumping cylinder 2 is filled with water substantially to the level shown in Fig. 2 of the drawings and that the water in the cylinder 3 is atthe lower level shown in the said figure, the valves being in the positions shown in Fig. 2 of the draw- 5 as, the operation of the pumping apparatus is as follows: The live steam generated in the boiler 1 will pass through the pipe 5 into the valve 8 and through the pipe 6 and into the pumping cylinder 2 at the top there of. The pressure of the steam against the upper end or the float 28 and t e surface of the water urrounding this float will result in the water contained in the pumping cylinder 2 being forced out through the branch pipe l0 and past the valve l3 to the pipe d2. The float 28, or course, lowers with the level of the water within the pumping cylinder 2 and in such movement recedes from the abutment upon the respective rod 27. How ever, tl e pressure of the steam acting against the under side oi the check valve 1%. will maintain this valve in closed position. At this point it may be stated that inasmuch as the space between the exterior of the float 28 and the inner surface of the wall of the pumping cylinder 2 is relatively narrow, there will he but little less of steam by con densation through contact with the water which is at lower temperature, the upper end of the float 28 receiving the maximum pressure as it is of a diameter nearly equal to the internal diameter of the pumping cyl inner. For the reasons the water within the pumping cylinder will not become heated to any undesirable high degree of temperature through absorption of heat from th steam. is stated the water is del' om the pumping cylinder to the pi e i from this pipe the water passes through the two branches and L6 to the coils 4.9 and O 51 and 52, finally passing out the branches 525 and 54 to the depe At a predetermined point in its lo "er-in movement, the float 28 will 7 act at its lower end with the in the condensing the pressure of thelive steam within the said pumping cylinder. The steam will then exhaust through the valve casing 12 and past the valve 14: into the downward branch 18 of the valve casing 16 but this branch is closed in a fluid-tight manner by the piston valve 20. The pressure of the .team against this valve 20 will then act to move the valve to the right in Fig. 2 oil the drawings so as to uncover the outlet p rt ment of the valve, corresponding motion will be imparted to the valve 2l moving the same from the position shown in Fig. 2 to position closing the outlet port 22 from the valve casing 17. Likewise through the movement of the valve 20 and the rod 23 connected therewith, the threeovay throttle valve 8 will be'rotated in a clockwise direction thus closing the supply of live steam to the pipe 6 andbringing the outlet port 11 of the said valve into communication with the pipe 7 so that live steam will be admitted from the generator 1 into the pumping cylinder hen th valve 20 moves in the direction stated above and uncovers the port 22, the exhaust steam will pass up vardly through the pipe 56 and into the condensing chamber 51 of the condenser i? and coming in contact with the water cooled creatim a partial vacuum within the pumping cylinder 2, the water of condensation flowing downwardly through the pipe. 56 and valve casing 15 into the said pumping cylinder. Due to the creation oi this partial vacuum, water will be drawn in from t supply main 35 through the branch 36 and past the valve 38 to the pumping cylinder until it reaches approximately the level shown in. Fig. 2 of the drawings. is the water level rises in the pumping cylinder 2, the float 28 will be carried upwardly until, striking against the abutment 30, it moves the valve rod 2? in an upward direction to seat the valve 14: and thus :rovide against escape of live steam when next admitted into the pumping cylinder. T he upper end of the pipe 58 communicates with the cylinder 2 at point above the levelof the water within the boiler or. generator 1 and as the highest water level in the pumping cylinder reaches a point above the point oi communication of the upper end of. the pipe 58 with the cylinder, when live steam is nor; I admitted to the cylinder, a greater or less volume of: water ill be discharged from the cylinder downwardly into the pipe 58 and past the check valve 60 into the water space of the boiler or generator 1. Of course, the operation just described is carried out in the pumping cylinder 3 and the parts associated therewith,

22 and in such move- Cit coils ll) will be condensed thus water being discharged from one of the cylinders whlle 1t- 1s being drawn into the other cylinder. While the water 1n either pumping cylinder does not, through absorption of a general proposition, however, the pumping apparatus will deliver cold water or,in other words, will deliver water substantially at the same temperature at which it enters the apparatus. t V

Having thus described What is claimed as new is: 1

1. In pumping apparatus, pumping cyl-. inders, a conduit for the liquid to be pumped the invention,

communicating with each cylinder, an outlet from each cylinder for the liquid, a source of fluid pressure supply in communication with the cylinders, a valve for controlling the passage'of the pressure-fluid to the cylinders, avalve-controlled exhaust from each cylinder for the pressure fluid, and means actuated by the pressure fluid passing through the exhaust for, automatically setting the valve controlling the passage of fluid to the cylinders;

2. In pumping apparatus. pumping cylinders, a conduit for the liquid to be pumped communicating wi h each cylinder, an outlet from each cylinder for the liquid. a

source of fluid pressure supply in communication with the cylinders, a' valve for controlling the passage of the pressure fluid to the cylinders. a valve-controlled exhaust from each cylinder for the pressure fluid,

piston valves controlling the outlet of each exhaust and open to the pressure of the fluidpassing through the exhaust, and op between the piston erative connections valves and the first mentioned valve for automatically actuating the latter.

3. In pumping apparatus. pumping cylinders, a conduit for the liquid to he pumped V communicating with each cylinder. an outlet from each cylinder for the liquid; a source of fluid pressure supply in communication with the cylinders, a valve for controlling. the passage of the pressure fluid to the cylinders. a valvecontrolled exhaust from each cylinder for thepressure fluid ineluding a casing having an outlet, a piston valve working in each casing and movable into and out of position to close the respective outlet. said valve being exposed to the pressure of fluid passing throughtheex haust and operative connections between the piston valves and the first mentioned valve. i

4. In pumping apparatus, pumping: cylinders, a conduit for the liquid to be pumped working in each casing and movable into 7 and out of position to close, the respective outlet under the influence of the pressure fluid passing through the exhaust, means on tending'between and connecting the piston valves, and an operative connection between the said means and the first mentioned valve for actuating the latter when the piston valves are moved.

5. In pumping apparatus,piunpin cylin- I ders, a conduit for the liquid to be pumped communicating with each cylinder, an outlet from each cylinder for the liquid. a source of I fluid pressure supply in communication with the cylinders. a valve for controlling the working in each of the said cas ngs and exposed toit-he pressure of the fluid flowing through. exhaust and movable to position to close the respective outlet and to position to uncover the same. and means extend- "ing between'and connecting the said pi ton valves and operatively connected with the operating arm of the first mentioned valve.

6. In pumping apparatus, pumping cylinder f. a conduit for the liquid to he pumped:communicating with each cy inder.

an outlet from each cylinder for thliquid,

a source of fluid pressure supply in communication with the cylinders. a valve for controlling the passage of the fluid pressure to the cylinders, an exhaust from each cylinder "for the pressure fluid. a float actuated valve for controlling the exhaust from each cylinder, a valve casing incommunication wi h the exhaust beyond each float actuated. valve, a piston valve working in each cusng and expo ed to the pressure of the fluid flowing through the exhaust, each casing having an outlet controlled through the movement of the respectivepiston valve. and means operatively connecting the piston Valves with the first mentioned valve.

7. In pumping apparatus, pumping cylinders, a conduit for the liquid to be pumped communicating with each cylinder, an outlet from each cylinder for the liquid, a source of fluidv pressure supply in comapparatus, pumping cylinders, a conduit for the liquid to be pumped communicating with each cylinder,

each cylinder for the liquid,

an outlet from a source of supply of a condensable fluid under pressure in communication with the cylinders, means for controlling the passage of the pressure fluid to the cylinders, an exhaust from each cylinder for the pressure fluid, condenser in communication with each exhaust, and means controlled by the flow of pressure fluid through the exhaust for operating the means for controlling the passage of pressure fluid to the cylinders.

9. En pumping apparatus, pumping cylinders, a conduit for the liquid to be pumped communicating with each cylinder, an outlet from each cylinder for the liquid, a source supply oft a condensable fluid under pressure in communication with the cy"nders, means "for controlling the passage of the pressure fluid to the cylinders, exhausts from the cylinders for the pressure fluid, condensing chambers in communication with the respective exhausts, coils within the respective condensing chambers for conducting the exhaust fluid from the respective cylinders and means actuated by the pressure fluid flowing through the exhaust to operate the means for controlling the flow of pressure fluid, to the cylinders.

10. In pumping apparatus, pumping cylinders, a conduit for the liquid to be pumped communicating with each cylinder, an outlet from each cylinder for the liquid, a source of supply of a condensable fluid under pressure in communication with the cylinders, a valve for controlling the passage of the pressure fluid to the cylinders, an exhaust from each cylinder for the pressure fluid, float actuated valves automatically controlling the discharge of fluid through the exhausts, av valve casing in communication with each exhaust and having an outlet, a piston valve working in each casing for controlling the outlet, means providing for simultaneous actuation of the said piston valves and the first mentioned valve, a condensing chamber in communication with the outlet from each valve casing, and a coil in each condensing chamber in communication with the liquid outlet from the respective cylinder. i

11. In pumping apparatus, a steam generator, pumping cylinder, a conduit "for the liquid to be pumped communicating witheach cylinder, an outlet from each cylinder for the said liquid, a valve for directing the passage of the steam to one cylinder and simultaneously cutting it of? from the other cylinder, a steam exhaust from each cylinder, means for automatically controlling the passage of the steam through the exhaust, and means actuated by steam passing through the exhaust for operating said valve.

In testimony whereof I allix my signature.

THOMAS- A. KILLMAN. [1,. s.] 

